Learning by doing refers to a theory of education expounded by American philosopher John Dewey. It's a hands-on approach to learning, meaning students must interact with their environment in order to adapt and learn. Dewey implemented this idea by setting up the University of Chicago Laboratory School. His views have been important in establishing practices of progressive education. For instance, the learn-by-doing theory was adopted by Richard DuFour and applied to the development of professional learning communities.